Door-jamb mortise plate



Dec. 28 1926. 1,612,225

A. SCHOY DOOR JAMBMORTISE PLATE Filed Nov. l0. 1925 1179212 lg?. Z.

I 7///////A if.

www

m :www d 1MM@ Patented Dec. 2 8, 1926.

' UNITED STATES 1,6122zs PATENT ortica ARTHURSCHOY, F NEW YORK, Y

Application led November 10, 1925. Serial No. 68,051. f Y

lu which is bevelled in a manner well known in the art, and which isintended to slide over the face of the jambmortise plate and toengagetherewith automatically.

Owing to the bevellingl of the noses of these spring latch bolts theyare apt to lit loosely in their mortises, so that unless the lock boltsalso are shot into the mortise plates there is a degree of looseness andplay which may result in door vibration and rat'-,

tling under variations of air pressure' on opposite sides of the door,which it is the main object of my invention to obviate, and which Iaccomplish by means of an adj ust* able auxiliary shoulder plate forengagement with the flat locking side of a` spring latch bolt, so thatlooseness or play of the said spring latch bolt in its mortise will beprevented, and a close fit insured between the parts involved. .f

To this end my invention consists essentially of an auxiliary shoulderplate mounted on the inner side of the door jamb plate adjacent to thespring lock bolt mortise by means which provide for its adjustment withf relation thereto as hereinafter set forth, and

described and claimed specilically,-a distinctive feature being theutilization, as a mount and support for my said auxiliary shoulderplate, of the usual lateral tongue extension of the jamb plate providedfor engagement with the bevelled end of the spring latch bolt in theusual way.

In the accompanying drawings, I'` illustrate a practical embodimentA ofthe essential features of' my invention asl applied to a door jamb platemade for the accommodation of both a door lock bolt, and a spring latchdoor bolt, although I do notlimit myself in this respect, since' myadjustable auxiliary bolt shoulder may be provided on a jamb mortiseplate designed only for engagement with a spring latch bolt of thecharacter designated, nor do I limit myself to the identical form andconstruction ofparts shown herein by way of exemplification, sincechanges may be made in minor details, and equivalent mechanicalexpedicnts resorted to with like results, and without departing from thespirit and intent of my invention in this respect.

`With this understandingz- Fig. 1, represents a fateview of a door jambplate of the duplex bolt mortise type hereinbefore referred to, myauxiliary bolt bearing shoulder being ,in retracted position;

Fig. 2, is a view like unto Fig. 1, showing my auxiliary bolt bearingshoulder plate slightly advanced to contract the area of the mortiseaperture;

Fig. 3, is alike view showing my auxiliary bearing'shoulder stillfurther advanced to contract the area of the mortise aperture;

Fig. 4, is a perspective view of the rear side of the door mortise jamblplate shown in the preceding figures;

Fig. 5, is a perspective view of my auxiliary bolt bearing shoulderplate;

Fig. 6, is a sectional detail, upon an enlarged scale, taken upon planeof line 6-6, Fig. l;l Y

Fig. 7 is a sectional detail, also upon an enlarged scale, taken uponplane of line' 7-7, Fig. 1;

'Fig'. 8, is a sectional detail` showing a modification.

In the type of door amb mortise plate P, shown as embodying a practicaladaptation of my invention, s, s, represent the holes for the screws bywhich the plate is secured to the door jamb, l the lock bolt mortise,and

. l, the spring latch bolt mortise, p, being the usual lateralextensionof the mortise plate P, provided for contactual engagement with thebevelle'd nose of a spring lat-ch bolt as heretofore, except that in thepresent case said lateral extension p, of the mortise plate P, hasadjustably mounted on its inner side my auxiliary bolt shoulder bearingplate a.

'lhis combination of my auxiliary bolt shoulder bearing plate a, withthe lateral extension p, of the jamb mortise plate I` may obviously beeffected by resort to various mechanical expedients, of which aprefel-red form is shown in this connection, oonsisting inv inturningthe horizontal edres of the lateral extension p, of the plateoP, to formretaining flanges p', p', as shown more particularly in Figs. 4 and 6,of the drawings; in forming said extension p, with a horizontalbevel-edged slot p2, and in prolll riding a bevel headed binding screw,(1, for engagement with a. female screw thread u', formed for thepuposev in said auxiliary plate a, as shown more particularly iu Figs. 6and 7, of the drawings, whereby the said auxiliary shoulder plate a, maybe adjustably secured in position according to requirements.

The chamfered or bevelled nose of a spring latch bolt is indicated ataf, in Fig. 7, of the drawings, illustrating its co-relation to thelateral extension p,- of the door janib plate P, in sliding thereover.

In the modification illustrated in Fig. 8, of the drawings, analternative structure of clamping means is shown in which the auxiliaryshoulder plate a, is formed with a screw stud for engagement with a nutn, the Circular edge of which is bcvelled to fit the bevel of the slotp2, in the jamb plate.

No claim is made broadly to a flanged plate in this connection.

What I claim as luy invention and desire to secure by Letters Patent,is:--

l. A door jalnb plate having a. lateral extension havingr its horizontaledges inturned to form parallel retaining flanges, an auxiliary boltshoulder' bearing plate slidably fitted between said fianges, and meanspassed through said bearingvplate and into said extension between saidfianges.

2. A door jamb mo'rtise plate havilw a lateral extension with itshorizontal edges inturncd to form parallel retaining flanges, anauxiliary bolt shoulder bearing plate slidably fitted between saidflanges, the said extension being formed with a horizontally extendedbevel-edged slot, and a screw member engaged in the bearing plate andhaving a bleveled head engaged in said bevel-edged s ot.

ARTHUR SCHOY.

